从 Flutter 类访问数据

Question

class Player{
final String playerName;
final int playerValue;

Player({this.playerName,this.playerValue});

final List <Player> playersList = [
 Player(playerName: 'player1', playerValue: 20),
 Player(playerName: 'player2', playerValue: 20),
 Player(playerName: 'player1', playerValue: 30),
 Player(playerName: 'player3', playerValue: 50),
 Player(playerName: 'player5', playerValue: 60),
];
player1 = (playersList..shuffle()).first;
player2 = (playersList..shuffle()).last;

while (player1.playerName == player2.playerName || player1.playerValue == player2.playerVaue) {

 player2 = (playersList..shuffle()).last;

   }

所以这就是我想要做的：我想手动创建一个玩家列表，如上所示，并希望将其中一个玩家随机分配给 player1 和 player2，以防他们两个结果相同值或名称，我想随机选择播放器，以便我们可以比较它们的值。我真的无法弄清楚如何在代码中制定它。 另外，我想将 playerName 和 playerValue 发送到另一个类，在那里我将它们显示在有状态的小部件中。如您所见，我刚刚开始使用 Flutter，因此非常感谢任何帮助！

Answer 1

这行得通...

   final List<Player> playersList = [
    Player(playerName: 'player1', playerValue: 20),
    Player(playerName: 'player2', playerValue: 20),
    Player(playerName: 'player1', playerValue: 30),
    Player(playerName: 'player3', playerValue: 50),
    Player(playerName: 'player5', playerValue: 60),
  ];

  playersList.shuffle();
  var player1 = playersList.first;
  var player2 = player1;
  while (player1.playerName == player2.playerName) {
    playersList.shuffle();
    player2 = playersList.first;
  }

  print(player1);
  print(player2);

更新：将其包装在 Player 类的方法中

class Player {
  final String playerName;
  final int playerValue;

  Player({this.playerName, this.playerValue});

  static List<Player> pairPlayers() {
    final List<Player> playersList = [
      Player(playerName: 'player1', playerValue: 20),
      Player(playerName: 'player2', playerValue: 20),
      Player(playerName: 'player1', playerValue: 30),
      Player(playerName: 'player3', playerValue: 50),
      Player(playerName: 'player5', playerValue: 60),
    ];

    playersList.shuffle();
    var player1 = playersList.first;
    var player2 = player1;
    while (player1.playerName == player2.playerName) {
      playersList.shuffle();
      player2 = playersList.first;
    }

    return [player1, player2];
  }

  @override
  String toString() {
    return playerName;
  }
}

那么任何时候你想配对玩家使用

Players.pairPlayers();